PURPOSE: To maximize data storage capacity while the comparatively linear address possibility of data storage areas which can be addressed on data storage disks is maintained. ;CONSTITUTION: The plural data storage disks have tracks which are independent from the length of a disk or spiral track ro...
PROBLEM TO BE SOLVED: To achieve easy and quick replenishment of a coolant when it runs short.;SOLUTION: The apparatus is provided with a cooling water bag 251 for storing the coolant to be supplied to a supply path 702, an upper limit water level sensor 254 and a lower limit water leve...